An appeals court acquitted on Wednesday former president Mohamed Morsi's spokesperson Yasser Ali on charges of assisting former prime minister Hisham Qandil, who was sentenced to one year in jail in 2013, to flee Egypt.

Ali, who was released from jail in November 2014 after spending 11 months in prison which exceeded his six month sentence, still appealed the ruling.

He was also acquitted on charges of belonging to the banned Muslim Brotherhood.

Ali resigned from his post as spokesperson in February 2013, saying that he felt the media was attacking him personally, but was immediately appointed by the ousted president to head the Cabinet's Information and Decision Support Centre (IDSC).

Egyptian authorities have launched an unrelenting crackdown on supporters of the Muslim Brotherhood since Morsi's ouster in July 2013. 

Hundreds of pro-Morsi protesters have been killed in street violence and thousands others locked up.

Morsi, along with members of Muslim Brotherhood leadership are now behind bars, facing a multitude of criminal charges including inciting violence and espionage.